#video_content {
    position: absolute;
    margin-left: 20%;
    top: 25%;
}

.section {
    z-index: -1;
}

.section img {
    width: 100%;
    height: 100%;
}

#content0 {
    background: url("../images/clarity.png");
    position: absolute;
    display: inline-block;
    right: 0;
    top: 50%;
    margin-top: -200px;
    padding: 50px 100px 50px 100px;
}

#content1 {
    background: url("../images/clarity.png");
    display: inline-block;
    position: absolute;
    left: 0;
    top: 50%;
    margin-top: -200px;
    padding: 50px 100px 50px 100px;
    -webkit-transition:all 0.7s
}
#content2 {
    background: url("../images/clarity.png");
    display: inline-block;
    position: absolute;
    left: 0;
    top: 50%;
    margin-top: -200px;
    /*padding: 50px 100px 50px 100px;*/
    padding-top: 50px;
    padding-bottom: 50px;
    width: 100%;
    text-align: center;
}
#content3 {
    background: url("../images/clarity.png");
    display: inline-block;
    position: absolute;
    left: 0;
    top: 50%;
    margin-top: -200px;
    padding: 50px 100px 50px 100px;
}

.title{
    text-align: left;
    font-size:40px;
    font-weight: bold;
    color:black;
    font-family: 'Microsoft Yahei', Verdana, arial, sans-serif;
}
.en_title{
    text-align: left;
    font-family: "Helvetica";
    font-size: 40px;
    color: #000000;
}
.desc{
    text-align: left;
    font-size:14px;
    color:black;
    line-height: 20px;
    font-family: 'Microsoft Yahei', Verdana, arial, sans-serif;
}

#content1.active {
    -webkit-transform: translate3d(548px, 0px, 0px);
    -moz-transform: translate3d(548px, 0px, 0px);
    -ms-transform: translate3d(548px, 0px, 0px);
    transform: translate3d(548px, 0px, 0px)
}

